Selenomethionine and Methioninase: Selenium Free Radical Anticancer Activity

2019 ◽  
pp. 199-210 ◽  
Author(s):  
Julian E. Spallholz
Keyword(s):  
Free Radical ◽  
Anticancer Activity

scholarly journals Synthesis and in vitro Cytotoxicity Study of Novel 4-Substituted Quinazolines Encompassed with Thiazolidinone and Azetidinone

2020 ◽  
Vol 32 (10) ◽  
pp. 2617-2623
Author(s):  
Akash Jori ◽  
Sheshagiri R. Dixit ◽  
Gurubasavraj V. Pujar
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Dna Binding ◽  
Anticancer Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
In Vitro Cytotoxicity ◽  
Free Radical Scavenging ◽  
Binding Studies

A series of quinazolines encompassed with thiazolidinone and azetidinone have been synthesized and evaluated for their antioxidant, anticancer and DNA binding studies. All the synthesized compounds were characterized by IR, 1H & 13C NMR and mass spectra. Antioxidant activity was carried out using % free radical scavenging by DPPH assay. Compounds 4b, 5b and 5d have shown better antioxidant activity (60, 67 and 66%, respectively) among the tested compounds. Compounds having % free radical scavenging activity more than 55% were evaluated for anticancer activity by MTT assay towards cell lines A-549 (lung carcinoma) and MDA-231 (human breast cancer). Results revealed that the tested compounds exhibited moderate to low anticancer activity. Further, DNA binding activity was studied by absorption titration method for all the synthesized compounds, and compound 5b showed a good binding constant of 70.05 and % hyperchromicity of 82.93%.

scholarly journals Exploration of Antioxidant and Anticancer Activity of Stephania japonica Leaves Extract

2021 ◽  
pp. 256-272
Author(s):  
Md. Dobirul Islam ◽  
Ariful Islam ◽  
Naoshia Tasnin ◽  
Syeda Farida Akter ◽  
Md. Salim Uddin
Keyword(s):  
Free Radical ◽  
Cell Growth ◽  
Anticancer Activity ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Cell Growth Inhibition

Aims: The demand for antioxidants from the natural source has drawn promising attention to outturn desired pharmacological effect by subsidizing the adverse effect for treating cancer. This study evaluated the antioxidant activity of Stephania japonica leaves extracts to explore the anticancer activity.    Methods: Antioxidant potential of crude extracts were evaluated using various methods which include total antioxidant activity, ferric reducing antioxidant assay, DPPH free radical, ABTS free radical, nitric oxide and superoxide anion radical scavenging assay. Anticancer activity was determined in vitro by MTT assay and in vivo on mice against Ehrlich ascites carcinoma (EAC) cell. Results: Phytoconstituents with free radical scavenging capacity were quantified in terms of inhibitory concentration (IC50) with the values of 17.00±3.22 µg/mL, 33.30 ± 5.45 µg/mL, 43.70±5.26 µg/mL and 52.30±1.07 µg/mL in DPPH, ABTS, superoxide anion radical and nitric oxide free radical scavenging assay, respectively as the highest quencher, acetone extract of S. japonica leaves (ASJL). ASJL and methanol extract (MSJL) showed low lethal dose (LD50) values of 21.76 and 26.63, respectively indicating higher toxicity.  In vitro anti-proliferative activity (MTT assay), ASJL and MSJL were exhibited 15.44±2.96 to 80.94±2.87 and 11.76±3.74 to 74.25±1.49 percent of cell growth inhibition, respectively at the concentration of 10.28 µg/mL to 833.33 µg/mL. In in vivo test, ASJL and MSJL at the dose of 100 mg/kg/day and 200 mg/kg/day (i.p.) showed cell growth inhibition of 58.25±4.24% to 79.09±2.45% and 46.26±2.68% to 61.74±4.41%, respectively on EAC cell tumor-bearing mice. The life span of intraperitoneal induced EAC cell bearing mice was increased to 29.05% and 57.02% on the treatment of ASJL with 100 and 200 mg/kg/day, respectively. Conclusions: The free radical scavenger of S. japonica leaves extract was stimulated the host immunity and inhibited the EAC cell growth through initiating the apoptosis cell death program. Therefore, S. japonica leaves might be utilized as a potent anticancer natural source.

scholarly journals Anticancer (liver cancer cell lines) and antioxidant activity of Cassia auriculata flower extract from acetone and methanol solvents

2018 ◽  
Vol 8 (6-s) ◽  
pp. 274-278 ◽  
Author(s):  
K Padmalochana
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Liver Cancer ◽  
Anticancer Activity ◽  
Cell Lines ◽  
Cancer Cell ◽  
Methanol Extract ◽  
Acetone Extract ◽  
Liver Cancer Cell ◽  
Cassia Auriculata

This research paper was communicated to elucidate the antioxidant and anticancer activities of acetone and methanol extract of Cassia auriculata flower. Antioxidant activity was assessed against DPPH and hydroxyl free radical. The anticancer activity was examined by inhibition on liver cancer cell lines. The highest antioxidant activity was found for methanol extract (IC50: 46.28 μg/ml) than acetone extract (IC50: 52.60 μg/ml) on DPPH free radical. The IC50 values for methanol and acetone extract was found to be 47.05 and 56.01±1.85 µg/ml, respectively on hydroxyl radical. The highest anticancer activity was found for methanol extract to be 36.10±2.46 µg/ml. Among these extract methanol extract have high antioxidant and anticancer activity. Keywords: Antioxidant, anticancer, Plant

scholarly journals Highly functionalized piperidines: Free radical scavenging, anticancer activity, DNA interaction and correlation with biological activity

2018 ◽  
Vol 9 ◽  
pp. 51-61 ◽  
Author(s):  
Suvankar Das ◽  
Cristiane J. da Silva ◽  
Marina de M. Silva ◽  
Maria Dayanne de A. Dantas ◽  
Ângelo de Fátima ◽  
...  
Keyword(s):  
Biological Activity ◽  
Free Radical ◽  
Anticancer Activity ◽  
Radical Scavenging ◽  
Dna Interaction ◽  
Free Radical Scavenging

Screening of 1,2-furanonaphthoquinones 1,2,3-1H-triazoles for glycosidases inhibitory activity and free radical scavenging potential: an insight in anticancer activity

2019 ◽  
Vol 28 (9) ◽  
pp. 1579-1588
Author(s):  
Rafael F. Dantas ◽  
Mario R. Senger ◽  
Mariana F. C. Cardoso ◽  
Vitor F. Ferreira ◽  
Maria Cecília B. V. de Souza ◽  
...  
Keyword(s):  
Free Radical ◽  
Anticancer Activity ◽  
Inhibitory Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging

Potentiation of bromotrichloromethane hepatotoxicity in male rats exposed to 10 ppm dietary chlordecone: Electron Microscopic and biochemical study

1990 ◽  
Vol 48 (3) ◽  
pp. 284-285
Author(s):  
O. M. Faroon ◽  
R. W. Henry ◽  
M. G. Soni ◽  
H. M. Mehendale
Keyword(s):  
Free Radical ◽  
Biochemical Study ◽  
Prior Exposure ◽  
Male Rats ◽  
Cellular Injury ◽  
Low Doses ◽  
Mixed Function Oxidase ◽  
Electron Microscopic ◽  
Potent Inducer ◽  
Cellular Energy

Previous work has shown that mirex undergoes photolytic dechlorination to chlordecone (CD) (KeponeR) in the environment. Much work has shown that prior exposure to nontoxic levels of CD causes potentiation of hepatotoxicity and lethality of CCl4, BrCCl3 and other halomethane compounds. Potentiation of bromotrichloromethane hepatotoxicity has been associated with compounds that stimulate the activity of hepatic mixed-function oxidase (MFO). An increase in the metabolism of halomethane by the MFO to a free radical initiates peroxidative decomposition of membranal lipids ending in massive cellular injury. However, not all MFO inducers potentiate BrCCl3 hepatotoxicity. Potentiation by much larger doses of phenobarbital is minimal and th at by a more potent inducer of MFO, mirex, is negligible at low doses. We suggest that the CD and bromotrichloromethane interaction results in a depletion of cellular energy and thereby reducing the cellular ability to undergo mitosis.

Deaminative carbonylative thioesterification of activated alkylamines with thiophenols under transition-metal-free conditions

2021 ◽  
Author(s):  
Fengqian Zhao ◽  
Xiao-Feng Wu
Keyword(s):  
Free Radical ◽  
Transition Metal ◽  
Metal Free

A transition-metal-free radical carbonylation of activated alkylamines with thiophenols has been successfully developed. Various thioesters were selectively produced with moderate to good yields.

883: The Anticancer Activity of Mycobacterial Cell Wall-DNA Complex (MCC) Against Human Bladder Cancer Cell Lines is Different to BCG

2007 ◽  
Vol 177 (4S) ◽  
pp. 294-294
Author(s):  
Nigel C. Phillips ◽  
Sonia Ménard ◽  
David S. Surprenant ◽  
Danbing Ke ◽  
Mario C. Filion
Keyword(s):  
Bladder Cancer ◽  
Cell Wall ◽  
Anticancer Activity ◽  
Cell Lines ◽  
Cancer Cell ◽  
Human Bladder Cancer ◽  
Human Bladder ◽  
Human Bladder Cancer Cell ◽  
Mycobacterial Cell Wall ◽  
Dna Complex

1120: Citrate and Vitamin E Blunt the SWL-Induced Free Radical Surge in an In-Vitro MDCK Cell Culture Model

2004 ◽  
Vol 171 (4S) ◽  
pp. 295-295
Author(s):  
Fernando C. Delvecchio ◽  
Ricardo M. Brizuela ◽  
Karen J. Byer ◽  
W. Patrick Springhart ◽  
Saeed R. Khan ◽  
...  
Keyword(s):  
Cell Culture ◽  
Free Radical ◽  
Vitamin E ◽  
Mdck Cell ◽  
Cell Culture Model ◽  
Culture Model

Prognostic significance of serum free radical level in head injury

2005 ◽  
Vol 2 (2) ◽  
pp. 107-109
Author(s):  
A. Mishra ◽  
M.F. Huda ◽  
V.P. Singh ◽  
S. Mohanty ◽  
A. Sodhi
Keyword(s):  
Free Radical ◽  
Head Injury ◽  
Prognostic Significance ◽  
Serum Free
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